A sitz bath is a shallow warm-water soak that covers just your perineal area, the space between your genitals and anus. You only need 3 to 4 inches of warm water and about 15 to 20 minutes. You can do it in a regular bathtub or with an inexpensive plastic basin that sits on your toilet.
What You Need
You have two options: your bathtub or a plastic sitz bath kit. The kits cost roughly $10 to $20 at most drugstores or online. They include a shallow, round basin that fits securely under your toilet seat, and many come with a plastic bag and tubing that lets you add warm water while you sit. Either method works equally well. The kit is simply more convenient if you have trouble getting in and out of a tub, or if you want to avoid cleaning the whole bathtub each time.
How to Prepare a Sitz Bath in a Bathtub
Start by cleaning the tub. Mix 2 tablespoons of bleach with half a gallon of water, scrub the tub surface, and rinse thoroughly. This matters because you’re soaking sensitive, possibly broken skin, and any residue from soap, body wash, or cleaning products can cause irritation or introduce bacteria.
Fill the tub with 3 to 4 inches of warm water. Test the temperature by placing a few drops on the inside of your wrist, the same way you’d check a baby’s bottle. It should feel comfortably warm, not hot. Water that’s too hot can increase swelling and irritate damaged tissue rather than soothe it.
Step into the tub and lower yourself so your perineal area is fully submerged. Bend your knees or, if you can manage it, dangle your legs over the sides of the tub to keep them out of the water. The goal is to soak only the affected area. Stay in for 15 to 20 minutes, adding more warm water as needed if it starts to cool.
Do not add shower gel, bubble bath, or any type of soap to the water. These can sting and irritate sensitive skin.
How to Use a Plastic Sitz Bath Kit
Clean the basin thoroughly before your first use. Many kits include cleaning instructions and solutions. If yours doesn’t, a good rinse with warm water and mild soap followed by a thorough rinse will do.
Place the basin on the rim of the toilet bowl, then lower the seat to hold it in place. If your kit includes a water bag with tubing, fill the bag with warm water before sitting down. Sit in the basin and use the tube to fill it until the water covers your perineal area. As the water cools, you can release more from the bag to keep the temperature comfortable. If your kit doesn’t include a bag, simply fill the basin with warm water before you sit down. Soak for 15 to 20 minutes.
Adding Epsom Salt or Baking Soda
Plain warm water is effective on its own, but Epsom salt or baking soda can add extra soothing and cleansing benefits. The general ratio is about 2 level teaspoons of salt or baking soda for every quart (4 cups) of water. If you’re filling a bathtub with 3 to 4 inches of water, 2 to 4 tablespoons of Epsom salt is a typical amount.
Epsom salt can help reduce minor swelling and ease muscle tension around the area. Baking soda is mildly alkaline, which helps calm irritated skin. Either one dissolves easily in warm water. Stir it in before you sit down so the granules don’t settle against your skin.
Drying Off Afterward
How you dry matters as much as the soak itself. When you get out, gently pat the area with a clean, soft cotton towel. Don’t rub or scrub. The skin you’re treating is likely inflamed, stitched, or otherwise tender, and friction will cause pain and slow healing. Another option is using a hair dryer on a cool or low warm setting, held at a comfortable distance. This is especially useful after postpartum stitches or hemorrhoid procedures, where even light pressure from a towel feels like too much.
How Often to Take a Sitz Bath
For most conditions, two to four times a day is the standard recommendation. Postpartum recovery typically calls for the same frequency. You can take sitz baths for as many days as needed until your symptoms improve. Each session lasts 15 to 20 minutes, so even at four times a day, you’re looking at about an hour to an hour and twenty minutes total.
If you’re recovering from surgery or radiation therapy, sitz baths can be particularly helpful for cleaning the area gently, boosting blood flow, and supporting the healing process without the friction of wiping or washing.
Common Reasons People Use Sitz Baths
Hemorrhoids are the most common reason, but sitz baths are also widely used after vaginal childbirth (especially with stitches or tearing), after surgery in the anal or genital area, and for conditions like anal fissures or irritation from radiation therapy. The warm water increases blood flow to the perineal area, which helps reduce swelling, relax tight muscles, and keep the area clean without direct contact or harsh wiping.
Keeping Things Clean Between Uses
After each sitz bath, rinse the bathtub or basin thoroughly and let it air dry. If you’re using a plastic kit, store it in a clean, dry place. Wash your hands after handling the equipment. Skipping the cleaning step between uses defeats the purpose, since you’re soaking a vulnerable area and any lingering bacteria from a previous session could cause infection. If you notice the basin developing discoloration or a film that doesn’t rinse away easily, replace it.